/*
 * To change this template, choose Tools | Templates
 * and open the template in the editor.
 */
package action;

import dao.AccountDAO;
import dao.EmployerDAO;
import dto.Account;
import java.io.IOException;
import java.io.PrintWriter;
import javax.servlet.RequestDispatcher;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;
import jaxb.Employers.Employers;
import utils.XMLTool;

/**
 *
 * @author trinhnta
 */
public class Controllers extends HttpServlet {

    private final String login = "login.html";
    private final String home = "home.jsp";
    private final String loginfail = "loginFail.html";
    private final String logout = "logout.html";
    private final String employerInfo = "employerInfo.jsp";

    /**
     * Processes requests for both HTTP <code>GET</code> and <code>POST</code> methods.
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    protected void processRequest(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        response.setContentType("text/html;charset=UTF-8");
        request.setCharacterEncoding("UTF-8");
        response.setCharacterEncoding("UTF-8");
        PrintWriter out = response.getWriter();
        HttpSession session = request.getSession();
        try {
            String action = request.getParameter("btAction");
            if (action.equals("Login")) {
                String username = request.getParameter("txtUsername");
                String password = request.getParameter("txtPassword");
                Account account = new AccountDAO().checkLogin(username, password);
                if (account != null) {
                    session.setAttribute("USER", username);
                    String role = account.getRole();
                    if (role.equals("admin")) {
                        session.setAttribute("ADMIN", role);
                    } else if (role.equals("employee")) {
                        session.setAttribute("EMPLOYEE", role);
                    } else if (role.equals("employer")) {
                        session.setAttribute("EMPLOYER", role);
                    }
                    RequestDispatcher rd = request.getRequestDispatcher(home);
                    rd.forward(request, response);
                } else {
                    RequestDispatcher rd = request.getRequestDispatcher(loginfail);
                    rd.forward(request, response);
                }
            } else if (action.equals("Logout")) {
                if (session != null) {
                    session.invalidate();
                }
                RequestDispatcher rd = request.getRequestDispatcher(home);
                rd.forward(request, response);
            } else if (action.equals("Employer")) {
                String name = request.getParameter("name");
                Employers emps = EmployerDAO.getEmployerByUN(name);
                String path = getServletContext().getRealPath("/");
                String fileName = path + "WEB-INF/employer.xml";
                try {
                    XMLTool.Marshalling(emps, fileName);
                } catch (Exception e) {
                    System.out.println(e.getMessage());
                }
                RequestDispatcher rd = request.getRequestDispatcher(employerInfo);
                rd.forward(request, response);
            }
        } finally {
            out.close();
        }
    }

    // <editor-fold defaultstate="collapsed" desc="HttpServlet methods. Click on the + sign on the left to edit the code.">
    /** 
     * Handles the HTTP <code>GET</code> method.
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    protected void doGet(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        processRequest(request, response);
    }

    /** 
     * Handles the HTTP <code>POST</code> method.
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    protected void doPost(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        processRequest(request, response);
    }

    /** 
     * Returns a short description of the servlet.
     * @return a String containing servlet description
     */
    public String getServletInfo() {
        return "Short description";
    }// </editor-fold>
}
